Yes, despite what Microsoft thinks they are NOT creating a correct file in GP!! I ran into the same problem. Since Microsoft, in all their infinite wisdom, has decided that it is not an issue, and it was a user error, I had to edit each ACH file that was created. Here are the 2 errors in the file. First line, after the 101 there needs to be a space, then after the Fed routing number there currently is a space between it and your bank's Routing Number, remove that space, the line should align itself after that. Second error, is in the 627 line (or 637 if using a Savings account to pay from), there is a blank space, if you notice that is because the system clipped off the end of your Routing number and last digit needs to be added, highlight the blank space and type in the correct digit. Save the file and resend it. I did my edits in Notepad, that program doesn't change anything else about the file and so you should be able to edit and try to upload it again, with these corrections it works out with Fiserv. Our bank switched over to them a couple of years ago and I had the same issues. I hope this helps.